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3 years ago

Translate to an algebraic expression. 28 more than d

Mathematics

2 answers:

Korvikt [17]3 years ago

8 0

Answer: d + 28

Step-by-step explanation:

Natalija [7]3 years ago

3 0

Answer:

d+28

Step-by-step explanation:

it is easier to remeber that you should always flip the wording so for this on "d" would be first then add the 28

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The sum of 1 and 6, divided by 7. A) 1+6/7 B) 1-6/7 C) 1/7+6 D) (1+6)/7

8090 [49]

D; 1 and 6 are being added together first then divided by 7, so need the parentheses around 1 and 6

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3 years ago

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Please help get value of x. I believe it is 7 but idk.

den301095 [7]

The value of x would be 8

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2 years ago

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What is the solution for m >7/12

Over [174]

Answer:

Inequality Form: m > 7/12

Interval Notation: (7/12, ∞)

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2 years ago

The U.S. Department of Housing and Urban Development publishes data on the fair market monthly rent for existing one-bedroom hou

Aleksandr [31]

Answer:

$n=(\frac{1.960(80)}{25})^2 =246.73 \approx 247$

So the answer for this case would be n=247 rounded up to the nearest integer

Step-by-step explanation:

We know that the standard deviation is :

$\sigma = 80$ represent the deviation

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 95% of confidence interval now can be founded using the normal distribution and the critical value would be $z_{\alpha/2}=1.960$ , replacing into formula (b) we got:

$n=(\frac{1.960(80)}{25})^2 =246.73 \approx 247$

So the answer for this case would be n=247 rounded up to the nearest integer

8 0

2 years ago

Write in standard form: <img src="https://tex.z-dn.net/?f=%28%5Cfrac%7B%5Csqrt%7B2%7D%7D%7B2%7D%20%2B%20%5Cfrac%7B%5Csqrt%7B2%7D

lutik1710 [3]

Answer:

-1

Step-by-step explanation:

$=(\frac{1}{\sqrt{2}}(1+i))^4\\=\frac{1}{4}(1+i)^2(i+i)^2\\=\frac{1}{4}(2i)(2i)\\=i^2\\=-1$

7 0

3 years ago